What does outrage accomplish when you cannot do anything about the beheadings?
What is done is done and my heart goes out to the families of the victims.
What do you suppose "we" do? We can not predict the future, we can only respond to assumed movements.
If you cannot do anything about a situation, it's best to just learn from the experience that compassion and diversity are not the answer. Political Correctness has ruined the US and it is going to be the downfall of this country.
Don't get mad, get even!